... foot brake valve,hand brake valve,relay valve,protection valve,air dryer,levelling valve and so on2. Strict quality control at ... : Aluminum Alloy, Zinc Alloy, NylonMachining: CNC machining centerFoot Brake Valve Application: SINO TRUCK,FAW,FOTON,JAC TRUCKOur main products ... :air brake valve:foot brake valve,hand brake valve,relay valve,protection valve,air dryer, ...